Boulder Weather

If moderate temperatures, an average of 300 sunny days per year and beautiful scenery sound like the perfect vacation destination, then you will love Boulder, Colorado, and its pleasant year-round weather.

Boulder is considered the high desert, with an altitude of 5,430 above sea level. This elevation ensures a mild climate with very little humidity in the summer and winter months. The warmest month is July with an average daytime temperature of 87 degrees Fahrenheit, but even then, you may need a sweater at night, as temperatures can dip quite low. January is the coldest month in Boulder, with an average daytime high of 45 degrees. Boulder's annual snowfall average is 89 inches. Visitors to the Rocky Mountains do best when they dress in layers, so they can be ready for all temperatures.

Current Weather

Average Weather

Month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Average High

47

48

56

63

72

82

88

85

78

66

54

45

Average Low

22

23

29

36

44

51

57

56

48

38

29

21

Mean

34

36

42

49

58

66

72

70

63

52

41

33

Average Precipitation

0.7 in

0.8 in

2.2 in

2.8 in

2.8 in

2.2 in

1.7 in

1.8 in

1.7 in

1.5 in

1.2 in

0.9 in

What to Do in Every Season

Thousands of tulips bloom on downtown Pearl Street and hiking trails starting to flourish with delicate wildflowers. Temps can quickly climb to the 80s in spring, but snow is not unheard of even in May, so come prepared for anything!

Go hiking! If you're venturing outdoors, know that Rocky Mountain snowfall runoff can make things a bit muddy, so bring boots and slip-on traction or cleats.